I'm trying to learn character rigging .. but I stopped at a point that is when I try to add a constaint to the hand joint and add the arm's control null that contain the ik .. the when I try to rotate this null the hand starts to move as it's vibrating not rotating :S .. I think the problem is in freezing the coordinates but not sure .. and if this is the problem when should I freeze them?
thanks in advance :)
When it comes to problems with rigging, it's always best to post your file so someone can take a look. Rigging can get quite complicated and you could have other issues that are actually causing the problems.